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. 2008 Jul 23;28(30):7513–7519. doi: 10.1523/JNEUROSCI.1951-08.2008

Figure 4.

Figure 4.

Kv4.2 internalization requires PKA phosphorylation at Ser 552. A, Representative images show that AMPA (50 μm) does not induce redistribution of Kv4.2gS552A from dendritic spines. AMPA treatment (n = 23 neurons, 1908 spines) had no effect on the percentage of spines containing Kv4.2gS552A (92.17 ± 1.49%), compared with control (93.89 ± 0.87%; n = 25 neurons, 3247 spines; p = 0.33). B, FSK (10 μm; n = 6) significantly reduces the peak current density of IA compared with untreated cultured neurons expressing Kv4.2g (Cont; n = 8; *p < 0.05). This effect was not observed in cultured neurons expressing Kv4.2S552A (Cont, n = 6; FSK, n = 8; p = 0.65). All data are mean ± SE.